eMOLT Weekly Update 2023-01-27 Weekly RecapMy apologies for a few weeks with no update. The last few weeks have been busy with preparations for the Cooperative Research Summits and the biogeochemical network workshop at WHOI. On that front, a big thank you to all of the eMOLT participants who made the effort to come down to WHOI and attend for one or more days. Thanks especially to those who were willing to sit in front of a room full of scientists and tech nerds and answer questions about their fishing operations and experiences out on the water. eMOLT was well represented in the room thanks to
There were a handful of industry members from other programs as well, including the CFRF Shelf Research Fleet and NEFSC Study Fleet, and we even had some West Coast fisheries representation from the Alaska Trollers Association and science representation with Linus Stoltz from the F.I.S.H. Project joining us to share his work with the dungeness crab fleet off Oregon. Our close collaborators from Ocean Data Network and Lowell Instruments were in the room and online too, along with many of their colleagues in the instrument manufacturing and tech spaces. Overall, the general consensus seems to be that the meeting was time well spent. Some preliminary notes:
Figure 1 - model performance of the DOPPIO, Mercator, and GOFS models across three different metrics. Lighter colors indicate better performance. The (a) DOPPIO column is the only column that includes eMOLT data, and is the best performer. The (d) NA Doppio column is the same model without the eMOLT data.
Non-realtime updatePete Begley (Little Bay Lobsters) mailed in his two non-realtime
probes the other week week with year-round data from both (164 and 183
fathoms) Gulf of Maine. As seen in the case of the deeper site in the
plot below, it was a relatively warm year and ended in being the warmest
December of all the years they have deployed at these locations. The
interesting thing about these deep sites is the lack of a seasonal
cycle. Figure 2 - 21 year bottom temperature time series from Pete Begley Realtime Summary (Vessels with Rockblock Satellite Transmitters)This week, we received 12 haul-averaged reports from 3 vessels.
In the figure above, you can see the approximate locations where we received “Status Reports” (a ping from your system letting us know that it’s still working) and “Data Uploads” (actual temperature / depth data collected by your probes). The “Status Reports” come in every 12 hours or so when a system is powered up. “Data Uploads” only come in when you haul the probes. If you were out fishing and don’t see your approximate locations on here, please reach out because there may be a problem with your system. On the topic of problems with systems, Huanxin and I visited Newport and Point Judith to troubleshoot issues on a few different vessels. The Lowell MATP temperature depth sensors that have been the workhorse sensor of the realtime program seem to be reaching their end of life. We just replaced the sensor on the F/V Virginia Marise this week. If you have a MATP probe and the data you see don’t make sense, please let us know. A common symptom of the ones we’ve replaced recently is that the depth reading is stuck at a very shallow value.
Figure 4 - Lowell MATP-2W loggers Miniboat newsThe Waterford CT High School’s R/V Neil Armstrong-deployed sensor-laden miniboat “Lady Lance” has been at sea for a few months. After revolving around a Gulf Stream Ring several times last month as shown in the animation below, it is now rotating around another ring as animated by the teacher here
|
Figure 3 - eMOLT Satellite Transmitter status
plot for the previous week.
